The isolation of Brucella abortus biotype I from serologically positive reactors following on S19 adult inoculation of dairy cows.
The incidence of infection following adult inoculation is such that this method alone cannot be relied on to control the spread of brucellosis. Brucella infection is present in a high percentage of serologically positive cases using the interpretation of titres as applied in South African. One premature and one full term calf born to cows 7-9 months after adult vaccination as well as the placentae, discharges and colostrum were all heavily infected with B. abortus biotype I.
D000372:Agglutination Tests; D000818:Animals; D002004:Brucella Vaccine / Q000276:immunology*; D002003:Brucella abortus / Q000302:isolation & purification; D002007:Brucellosis, Bovine / Q000276:immunology / Q000517:prevention & control*; D002417:Cattle; D003168:Complement Fixation Tests; D005260:Female; D013997:Time Factors
D002004:Brucella Vaccine